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THANKS B40RT AND ROCKARIA THE PHOTO IS A GREAT HELP THE FRAME I HAVE IS VERY
SIMILAR ONE DIFFERENCE WE HAVE SPOTTED IS THE TOP AND BOTTOM REAR SHOCKER
MOUNTING POINTS BUT THE DIAMOND SEEMS THE CLOSEST MATCH TO WHAT I HAVE.
I AM OPEN TO ANY OTHER MINI TRIALS BIKE BUILDER'S OF THAT ERA,ONE THING
I HAVE SPOTTED WHICH MIGHT HELP PIN DOWN WHAT THIS IS,IS THAT ON THE FRAME
THAT I HAVE AS A LARGE TOP TUBE OF 1 3/4 INCHES AND A SMALLER 1 INCH DIAMETER
TUBE FROM WHERE THE FRONT DOWN TUBES ARE WELDED TO THE HEAD STOCK AND WELDED
TO THE UNDERSIDE OF THE MAIN TOP TUBE APPROX HALF WAY DOWN IT'S LENGTH IF THIS
IS UNDERSTANDABLE.
DON'T KNOW HOW MANY VERSIONS AND ALTERATION'S WERE MADE THROUGHOUT THE DIAMOND
TRIALS BIKE SHORT LIFE.THANKS ONCE AGAIN 08 COLIN
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Hi All might be one for big J looking for information and photo's of
the late 60's Diamond trials bike,the only information i have found
to date is in Mr Morleys british two stroke book and there is no photo's
I have aquired a frame which i was told was a Dalesman which i don't think
it is,on rubbing back the paint work the frame looks to have been a pale
blue but the rear chain is adjusted by snail cams on the swinging arm pivot
it has prop stand mtg bracket on the R/H side the frame is also twin down
tube forming a cradle under the engine,engine mounting's look to be for a
sachs engine.It looks at first glance like a rickman but they were nickle
plated or possible wassell but from the pictures doesn't have the snail cam
adjusted rear chain so now i'm open to suggestion's and any help that i can
find on the diamond trials bike that was made in Birmingham in the late 60's
mini trials bike era,thanks in anticipation o8 Colin.
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while you have the clutch cover try the kick start
again and watch the clutch unit to see if it is slipping
plates make sure you have some cable free play at
at handle bar lever if nesesary slacken the clutch centre
push rod ajuster after that its down to the clutch plates
and the clutch spring tension ajustment as i have already
said you should be able to see what 's going on while you
have the primarycover off, also while your at it check the gearbox
sprocket hasn.t come loose and also check the end float
on the clutch unit
hope this helps colini
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hi b40 had no problems using a 15mm axle in the rear wheel
of my h/weight ajs as the swinging arm on my ajs uses the one
out of smaller and lighter 250 amc bikes sorry don't know the
b40 set up but can't see any problem as long as you are using
a steel axle
colin
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I have started my next project, a heavy weight ajs (matchless)
have started to collect part's etc,have acquired a late amc gearbox
but it is a road box not a trials, any ideas out there what ratios do
i need and is there anybody specializing in making or supplying
internals for these gear boxes,any ideas also on rear shock and
spring rates (who's is best).for the heavy weights.
Colin
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tell me how i post and i will definatly post picture's
if you talk with big j nicely he might he has some photo's
colin
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hi there sparks2 yes that is the same malcom barnes although he
has now virtualy retired, i took the pennine across to his home for
him to look over and have a ride on he is now suffering badly
with artheritous in his hands and knnee's he has still got 3 trials
bikes last i saw him out on a trials bike couple of years ago at a
poachers club trial at biscathorpe quarry riding a ht5 of which he
remarked was getting too harder work for his hands and knee's
with the artheritous but if i could get ossa fully sorted he would
love to ride again i've promised him when i get the carb back from
been resleeved and its back up and running ok he can borrow it
anytime, just to see him ride an ossa again, he'd fallen in love again
and to think i'd managed to find one and resurect one back to original
i spoke with mick andrews and he has seen the bike he reconded it
must be the only original mk 1 left in uk as he as he doesn't
of know of any other that is unless anyone knows different let me
know would see another surive
colin
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As i mentioned in an earlier post i have a 32a complete bottom end
sat here and no top end iv'e had a whisper that i know where there
is a 350 top end layed by what i can find out it is a square barrel but
the top end of the barrel including the head sticks out 25-30 mil wider
than the bottom square of the barrel i don't know who made this conversion
or what to pay for it if at all any advice on price and who made it and whether
it's any good would be welcomed.
Colin
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Hi sparks 2 Ted first bike the one i have reg no is MAU 113F
i have had this confirmed by Ted his self,the other rider Ted's
team mate riding vertually same bike as Ted was a guy called
Malcolm Barnes from Barnetby-le-wold North Lincolnshire.
he was the top rider in the area at that time his bike was registered
TRA---F i actually rode this bike and when Malcolm sold it to Chris
Nieman i was at tech college with Chris,Chris loaned me the bike
and to me at that time after Malc and Chris had basicaly sorted it out
it was fabulous to ride,been the 230 race motor de-tuned was very
fiece and there was nothing to catch it on the road my riding buddy
at the time as we had both just started riding trials him riding a Norman
me riding a 61 Dot my Dot had blown the big end and crank was away
been repaired so Chris loaned me the Pennine unbeknown to my mate
on the Sunday morning been as we riding the bikes to the trial he turned
up bright and early him still thinking i was riding the Dot he got the shock
of his life when i pulled the Ossa out,Graham my mate turned on his heel
jumped on the Norman and disappeared i shot into the house got my jacket
and boots etc,dashed out fired up the Ossa and set off after him took me a
2 or 3 miles to catch him up,when i overtook him and left him for dead
i shall never forget the looks on his face.
Incidently i was runner up at that trial i was beaten by a Gaunt Suzuki
120cc sadly come the Monday i had to take the bike back to Chris,Chris
sold it on and bought Malcolm Barnes second Ossa and i have never heard
anything of them since i have spoken with Macolm Barnes this year and he
has no idea to what ever happened to either of them,Chris Nieman emmigrated
to New Zealand of which i have never seen him since
Regards Colin
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Hi John what state is the carb body and slide in are all
the bolts there bolting the crank cases together don't know
your engine casing layout, are the crank seals direct into
the crank case halves, is there any damage or cracks in
there versinity also what state are the crank cases in general
is it a good sealed joint between barrel and crank case and
good sealed joints from carb, manifold to barrel.
try these, other thing i have heard of was pourus crank cases
but was on the old style two strokes.
Hope this helps Colin
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Hi John as i work in the motor trade any engine needs three
things air, fuel, and means of ignition ie spark if it's a petrol
engine these three elements have got to be in the right order
ie timing (suck,squeeze,bang) in your case for the engine to
run away youv'e got to be getting fuel and air from somewhere
as you say the slide in the carb is not sticking open so it can't
be getting more fuel therefore youv'e got to have an air leak
somewhere,the only thing iv'e had was an ossa that ticked over
when cold but as the engine warmed up the tick over increased
this was down when traced to a badly worn slide and carb body
work on the engine methodicly to isolate the fault to a fuel and
air problem you can rule out the ignition side.
Hope this helps Colin
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Hi David I presume you haven't actually run your motor with
the big barrel any idea whether it's worth considering a big
bore conversion and any idea the cost of these conversions.
Who is now making these kits.
thanks again Colin
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Hi Total shell point taken, but when you hear of and see cubs
anywhere from 200 to 290cc, bsa units anywhere from
250 to 490cc, bantams stretched anywhere up to 230cc
the old 8 and 9e's opened up to 225cc there must be something
to this over boring lark and i was basically thinking aloud on what
is available for the A series villiers.I have a bottom end sat here
and need a top end for it and looking at some of the prices they
asking for cast iron barrels let alone the alloy square barrels i was
interested to find out what else is available that is why i posted
the question. thanks again Colin
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Anybody tried or have knowledge of the big bore kits for the villiers
A series bottom ends.Ive been told that you can get them out to
350cc is this correct.Who makes these conversions and what sort
of a price,will the crank/big end, clutch and gear box stand the extra
power and can you get away with rejetting standard amal carb.
Is it a worth while conversion cos i'm thinking along the lines of
building a jimmy with one of these engines.
Colin
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Hi Grumpy fanatic i can't seem to put any photos on at the moment
but if you email me on pauline.thompson3@virgin.net i will send you
photos before and after.My bike is the breffitt first Ossa mau 113f
in silver if you can remember him and the bike,big sutton falcons
club rider.I first saw Ted and the silver Ossa in 1968 at the Porlot
Quarry Derbyshire trials Porlot wasn't one of my favourite venues
in those day's as i had just started riding trials on an old round tube
Dot (didn't go over the rocks very well) look forward to hearing
from you again.Colin
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Hi hop blip and a j had problems trying to post pictures suggest you
send me your email address and i will email some photos to you.
have you riden or seen one before.Is there any chance you might
beable to post the pictures 08colin
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Looking for anyone that can remember or rode one of the original 230 4 speed Ossa Pennines (plonker)
I alway's wanted an early all fibre glass Pennine, been hunting for 8 or 9 years anyway 2 years ago found
one up near Penrith thrown in the back of a shed in one H--- of a state anyway large lump of heavys' changed
hands put remains of said bike in back of van and set off for the 150 mile drive home (plenty of time to work
out how i'm going to explain what a good investment it is to the other half) It was painted in austin allego
metalic green and everything else in matt black (spray can).The engine unit was held together with a large
hose clip round outer cover's and crank case fins were smashed off head and barrel,exhaust system looked
like it had been attacked with a hammer and this is only a brief description of the shocking state it was in.
But underneath this mess i could see my dream Ossa Pennine (ever tried to convince the mrs).
There was a hole top and bottom through r/hand crank case half and outer cover.That was 2 years ago
spoke with Mick Andrews and a local x works rider Malcolm Barnes to find when we found matching engine
and frame number's for one of the 2 Pennines in the UK apart fron mick's this one being the Ted Breffitt first
Ossa.Ted resprayed his Ossa silver and yellow flash i photo'd this bike at the Hillsborough trial in 1968
in Don Morley's spanish two strokes there is a photo on page 131 of Ted riding in the Bemrose on it.
I got in touch with Ted and met him at this years Pre 65 scottish and he couldn't believe that it had survived.
Got it up and running in May this year but have got a dreaded badly worn 24mm IRZ carb problems i'm still waiting for it to come back from being repaired.
So does anybody remember or rode one of these early Pennines
Has anybody got or know where i might find an original 24mm IRZ carb
Also looking for the small VDO speedo that was mounted on the top yoke.
As big j would say feet up and thanks.08colin
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